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A navy-blue world orbiting a faraway star is the first exoplanet to have its color measured. Discovered in 2005, HD 189733 b is one of the best-studied planets outside the Solar System, orbiting a star about 19 parsecs away in the Vulpecula, or Fox, constellation.
http://www.huffingtonpost.com/2013/07/11/deep-blue-planet-hubble-telescope-color_n_3580196.html?ir=Science&utm_campaign=071213&utm_medium=email&utm_source=Alert-science&utm_content=Photo
